Apparatus for removing water from pulp-like materials.



No. 644,207. Patented Feb; 27, I900.

H. KEBRINNES.

APPARATUS FOR REMOVING WATER FROM PULPLIKE MATERIALS.

(Application flied Apr. 1, 1899.) (No Model.) '2 Sheets-She'd I.

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No. 644,207. Patented Feb. 27, I900. H. KERBINNES.

APPARATUS FOR REMOVING WATER FROM PULPLIKE MATERIALS.

(Applicati on filed Apr. 1, 1899.) (No Model.) 2 Sheets-Sheet 2.

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NI'IE STATES HEINRICH KERRINNES, OF TILSIT, GERMANY.

APPARATUS FOR REMOVING WATER FROM PULP-LIKE MATERIALS.

SPECIFICATION forming part of Letters Patent N 0. 644,207, datedFebruary 27, 1900.

Application filed April 11 1899. Serial No. 711,362. (No model.)

To all whom it may concern:

Be it known that I, HEINRICH KERRINNES, a subject of the German Emperor,residing at Tilsit, in the German Empire, have invented certain new anduseful Improvements in Apparatus for Removing Water from Pulp-LikeMaterials, more Particularly Peat Material; and I do hereby declare thefollowing to be a full, clear, and exact description of the invention,such as will enable others skilled in the art to which it appertains tomake and use the same.

The subject of this invention is an apparatus for removing water from orfiltering pulplike materials, more particularly commin utedpeat materialcontaining water, in order to bring the same into a suitable conditionfor the manufacture of peat briquets.

The apparatus consists, essentially, in one or more tubes withperforated walls, which are coated on the inside with filtering materialand into which the material from which Water is to be removed isintroduced under pressure. The tubes are provided in the interior withan arrangement through which the material from which the water hasalready been removed is removed from the filtering material toward themiddle of the tubes in order to prevent the filtering medium from beingclogged or rendered impermeable and the filtering or removal of thewater rendered more difficult. At the same time by this arrangement thematerial is continuously mixed and a homogeneous consistencyimparted toit.

In the drawings the apparatus is shown in longitudinal section in Figure1 and in transverse section in Fig. 2, an apparatus with nine waterremoving or filtering tubes being selected as an example. The number andarrangement of the tubes can, however, be Varied as desired.

The apparatus consists of a n umber of tubes at, each formed by aperforated wall I), the internal surface of which is coated with asmooth pervious filtering medium c-for example, stout silk fabric 0 witha backing of felt 0 The tubes at are in communication with a chamber d,into which the material from which the water is to be removedforexample, comminuted-peat material containing water is forced underpressure by a pump or other suitable means. This material enters underpressure into the water removingv or filter tubes at and is heldtherein'for a time by a valve f, closing the outlet from the tubes,whereby the water contained in the material is pressed out of thematerial through the filtering medium and the perforated walls of thetubes and flows into a chamber g, surrounding the tubes, from which itcan be conducted away through the apertures h.

With the strong pressure under which the material from which the wateris to be removed must pass through the filter-tubes a in order to getrid of the water, particles of the material from which the water hasalready been removed may lodge themselves on the filtering medium 0,covering the inner wall of the tube, by reason of the great frictionalresistance which this offers to the forward motion of the material,whereby the unimpeded removal of the water may be interfered with, sincethe water must first be forced through the particles of material fromwhich the water has been removed. In order to obviate this disadvantage,cleaners are arranged on shafts t', passing through the several filtertubes at, which cleaners cleanse the filtering medium. The cleaners havethe form of curved worm-shaped blades or wings 7a, which are providedwith holes in order to allow the material from which the water is to beremoved to pass through easily on rotation of the shafts 1'.

In the rotation of the shafts z' the blades or wings in cleanse not onlythe filter-walls of the tubes at, but by reason of their curvature movethe particles of material from which the water has been removed inwardtoward the shaft. In this manner an uninterrupted removal of water andmixture of the material take place, whereby the material receives a veryuniform consistency.

The driving of the shafts is effected by the toothed wheel Z on thecenter shaft, whereby the other shafts are driven by means of thetoothed wheels m. The center shaft 7; receives its motion from theexterior from a source of power by means of gear-wheels or belts.

What I claim as my invention, and desire to secure by Letters Patent,is-

1. In a filtering apparatus, the combination of a perforated filter-tubehaving a layer of filtering medium on its inner side, with a rotatingshaft within said tube, and curved perforated scrapingblades mounted onsaid shaft and adapted upon its rotation to scrape the filtering mediumand stir the material to be filtered, displacing inward the materialfrom which the water has been removed.

2. A filtering apparatus comprising a plurality of perforated tubes atlined with filterro ing medium, a casing inclosing said tubes, a

chamber communicating with the interior of said tubes, rotary shaftswithin said tubes, scrapers mounted on said shafts, and means forsimultaneously rotating said shafts.

In testimony whereof I affix my signature in presence of two witnesses.

HEINRICH KERRINNES. Witnesses:

T. SCHUMACHER, A. P. MILLER.

